Page "Albertosaurus" Paragraph 12

In 2001, Bruce Rothschild and others published a study examining evidence for stress fractures and tendon avulsions in theropod dinosaurs and the implications for their behavior.

They found that only one of the 319 Albertosaurus foot bones checked for stress fractures actually had them and none of the four hand bones did.

The scientists found that stress fractures were " significantly " less common in Albertosaurus than in the carnosaur Allosaurus.

ROM 807, the holotype of A. arctunguis ( now referred to A. sarcophagus ), had a 2. 5 by 3. 5 cm deep hole in the iliac blade, although the describer of the species did not recognize this as pathological.

The specimen also contains some exostosis on the fourth left metatarsal.

Two of the five Albertosaurus sarcophagus specimens with humeri in 1970 were reported by Dale Russel as having pathological damage to them.